Stunning updated colonial in the award-winning Niskayuna SD offering 3,600+ finished sqft! Located in one of Niskayuna's most desirable non-through neighborhoods where kids ride bikes & neighbors gather, 18 County Clare blends luxury updates, functional living space & the move-in ready lifestyle today's buyers are searching for. Inside, the remodeled kitchen anchors the home w/custom cabinetry, GE Profile appliances, cabinet-faced refrigerator, wood hood vent, pantry storage & ideal layout for entertaining & everyday living. Hardwood floors flow throughout much of the home & are complemented by refinished hardwoods, massive stone FP in family room, oversized bay window, updated half bath, mudroom & newer ThermaTru Mission front door. The luxury primary suite features a sitting area w/French doors, oversized walk-in closet & remodeled spa-like bath w/marble tile, soaking tub & dual vanity, while a dedicated 1st floor office/flex room offers ideal work-from-home space or potential 5th bedroom. Upstairs bedrooms offer generous space, custom closet systems & access to a large updated full bath w/double vanity. Finished basement adds approx. 890 additional finished sqft featuring theater room with 7.2 surround sound, high-def projector, dedicated control room & stadium seating included w/sale, plus private office w/California Closets built-ins & bonus flex space! Outside, the backyard transforms into a private oasis w/extensive patio pavers surrounding the heated in-ground pool & pool house, while the outdoor gas firepit, vinyl fencing, basketball hoop & jungle gym create the ultimate entertaining space. Major updates include Champion siding/windows with a transferable lifetime warranty, remodeled kitchen & baths, newer central A/C, new furnace (2025), new pool liner, new pool safety cover, drainage improvements, water softener, French drain system & more! Rarely does a home offer this level of updates, entertaining space & lifestyle in Niskayuna!